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Патент USA US2111701

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? ?inch 22, 193.
F. J. STRAUB
2,111,170]
BLOCK MAKING APPARATUS
Filed Aug. 19, 1936
3 Sheets-Sheet i
L?VVENTOR.
F. .Im 5 T R A U 8
2,111,701
_BLOCK MAKING APPARATUS
Filed Aug. 19, 1936
3 Sheets-Sheet 2
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BY
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ATTORNEY
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ch 22, 1938.
' ,_-_ _,_ STRAUB
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BLOCK MAKING APPARATUS
Filed Augp 19, 1956
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3 Sheets-Sheet 3
Patented Mar. 22, 1938
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2,111,701
?PATENT OFFICE?
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2,111,701
BLOCK MAKING APPARATUS
Francis J?. Straub, New Kensington, Pa.
Application August 19, 1936, Serial No. 96,850
(01. 25-941)
11 Claims.
ing the mold box provided with a pair of oppo
site disks providing the smoothing side walls of
the mold, in lowered position;
Fig. 6 is a partly vertical section on the line
My invention relates to the art of making con
crete building blocks, and particularly to means
for imparting surface treatment thereto while
the aggregate is still plastic.
r5
7
In the manufacture of such blocks, made of a
VI?,?VI of Fig.5; .
plate in place of compressing tampers;
,
. Fig. 8 is aplan view, partly in section, on the
desirable in some cases to secure a smooth or ap
proximately smooth outer surface.
lineVIII--VIII of Fig. 9, showing a modi?ed con
In my prior
,that, extent has proven generally satisfactory in
Fig. 10 is a similar view showing the formed 15
block ejected from the mold horizontally;
surface segregation of the? ?ner particles of the
mix.
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>
In connection with the manufacture and use
of such blocks, it has long been desirable to pro
vide a block with at least one side so surfaced for
exposurein a wall. . A further desirable result is
in producing lines of direction, whether very
indicated;
?Fig.1l is a sectional detail view of the tipping
frame of said ?gures, tilted for removal of the
block.
For the formationof the block of any desired
rectangular shape?and dimensions, I utilize a 20
more or less conventional housing box comprising
a bottom wall or plate 2, end walls 3, and as in
Figs. 1 and 2, a side wall 4, the opposite ?side of
the ,mold box omitting such wall and being closed
minute or more prominent, in a curving direction
by the smoothing or trowelling disk 5.
as to the block when in location, for surface
j The block to be formed may be solid, or cored
as in Fig. 3, in which case the cores 6 are secured
ornamentation.
,
?
That is to say, in a smoothing or trowelling
treatment of a block face in plastic form, while
730 an approximately smooth surface is possible, it
is also true that minute grooves or'lines of di
rection are developed co-extensive with the orig
inal direction of movement of the smoothing face
'40
Fig. 9 is a longitudinal vertical section on the
lineIX-IX of Fig. v8, with the hopper and tamps
plied trowelling or smoothing is involved, with a
degree of accompanying densi?cation and?local
33
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disclosed means and the method of so treating
one or more sides of a block. Such treatment to
sofar as horizontal or vertical reciprocably ap
'20
10
struction providing for lower face smoothing;
Patents Nos. 1,651,420, 1,682,359, 1,692,355 and
1,987,721, and in application Ser. No. 60,073, are
r
Fig. '7 is a longitudinal vertical section through
a mold box showing application of a pressing
suitable aggregate such as sand and gravel,,cin?
ders, etc. mixed with cement and water and sub
jected to tamping or pressing operations, it is
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5
to and move vertically with the bottom plate 2.
Aggregate is ?delivered to the mold box in the
usual manner by a hopper ?I slidable on platform W O
8 and is compressed by tampers 9 following estab
lished conventional practice, or by other suitable
compressing means.
?
one or more faces of a block while in the tamping
In ?lling and tamping position the mold box is
temporarily supported in erected position by any
suitable meansas an adjustable bar or plate II].
Guide rods ll extend from a base ?I2, through the
mold box for maintaining it in position during
mold, during the tamping or pressing? operation,
vertical adjustment.
and ?nal ejection, so as to accomplish the de
from the base through the bottom wall 2 for
ejection of the block when the mold box is low
or faces.
After considerable experiment I have now de
vised a machine which is capable of functioning
in the desired manner to simultaneously smooth
sired results and product, such machine forming
the subject matter of this application.
In connection with the further description ref
145 erence will be made to the accompanying draw- ,
ings showing preferred forms of apparatus which
may be employed, in'which:
_
Similar rods 13 I extend
ered, and rods 13 are surrounded by ?springs M
for re-erecting the mold box for the next opera
tion.
7
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45
In the machine as disclosed I show the rotat
abledisk 5 carried by its shaft 15 in bearing l6
of a swinging lever ?arm 11 pivoted on a shaft l8
forming machine and a smoothing disk applied and having an extension arm 19 provided with
Fig. 1 is a plan view of the mold of a block
, to and forming one side of the mold;
-
Fig. 2 is a view in side elevation thereof, ?partly
in section on the line II-?I,I of Fig. 1;
Fig. 3 is an isometric view of the resulting
block;
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,
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Figs. 4 and 5 are views like Figs. 1 and 2, show
a counterweight 2U.
50
The bottom plate of the mold box is connected
at 2| with a link or links 22 having a terminal
pin 23 adapted to be engaged by hook 24 of lever
arm extension 25 upon lowering the disk 5, as in
:dotted lines Fig. 2.
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55
2
2,111,701
Lever arm I?! and the rotatable disk 5 are main
drawings.
stop, as abutment 26.
inwardly of the wall of mold box 3b and a sep
Disk 5 is adapted to lie closely against the open
side of the mold forming a retaining wall there
for, and to be rotated by suitable gearing as
pulleys or sprockets 21, 28, a driving gear 29 and
connected chains, as will be readily understood.
10
I show in Figs. 4, 5 and 6 a similar construction?
utilizing a pair of disks 50. arranged at opposite
sides of the mold box 3a and forming a pair of
rotating side walls therefor. Otherwise the con
struction and operation is the same as above de
15 scribed, the disks being located at each side of
bearing I6, with corresponding indicating nu
merals. I show also in Fig. 5 one means for tilt
ing the disk lever H as by a ?exible connection
30 secured to lever extension l9 as at 3| passing
20 over sheaves 32, 32, and provided with a depend
ing pull terminal 33, whereby the disk or disks
may be lowered out of operative relation to the
face or faces of the molded block.
Such lowering of the disk or disks effects a con
25 tinuous wiping and smoothing action on the face
arable opposite wall or pallet 33b is removable
with the molded block from plate 2b, when the
formed block and pallet are projected laterally
from the mold, as in Fig. 10. During compres
sion the pallet plate forms one wall of the mold
box and is retained by any suitable means, as 10
locking hooks c.
For the purpose of thus removing the block I
provide any suitable construction as a series of
rods or bars l3b connected with pusher plate 21)
and a rear cross bar framing 36 having a suit
36 on a rear trackway 38 of the foundation. By
such means the discharge of the block may be
effected by the operator.
20
Rods 42 also extend forwardly from bar 36
through suitable bearings in the ends of the
mold box and abut against pallet 34b, maintain~
ing it in proper spaced relation.
At a suitable position beyond the mold box is 25
formed and faced block in elevated position as
pallet 34?) into position for removal, the angle
placement of the next pallet and a new charge
of aggregate, with corresponding erection of the
35 disk or disks, for another operation.
In such treatment the compressed aggregate
15
able operating handle or frame 31. Such manip
ulating mechanism is slidably mounted as by bar
provided a tilting angle shaped bracket 39 pivoted
at 40 to suitable supports for outward tilting
the block ejecting rods I3 with its usual pallet 34,
whereupon the mold box is then erected for
whereby to reverse the block with its plate or
bracket resting temporarily on a suitable abut 30
ment support Ill. In such position it will be
understood that the plate 2b and the cores have
been withdrawn.
In such installation, disk 51) is preferably lo
cated approximately centrally underneath the 35
mold box, as indicated, and provides a substan
in molded form is smoothed on one or both sides
tial support during the tamping or pressing treat
by the disk or disks, providing the trowelled
surface or surfaces and with the annularly de
ment. As the block is formed the disk 5b is in
rotation and imparts the smoothing or trowelling
treatment to the contacting face of the block, 40
such treatment continuing during the ejection,
and leaving the surface of the block in the de
40 veloped minute score marks over the side face or
faces, as indicated in Fig. 3. It will be under
stood of course that the compression of the ag
gregate may be effected by a presser plate or head
35 as in Fig. 7, extending slightly into the upper
45 edge portion of the mold box as commonly prac
ticed.
In either case the density of the formed block
necessarily depends on the applied force, but
with either such application the aggregate is
desirably substantially uniform throughout from
top to bottom. The smoothing action of the
disk is preferably by its peripheral portion as
indicated in the principal ?gures of the drawings,
and its wiping action tends to not only smooth
55 and trowel the surface but to additionally impel,
segregate and distribute the ?ner particles of
the mix not only over the ?entire surface but at
the side and end edge portions of the block, leav
60
Pusher plate 25 in operative position is located
or faces, passing therebeyond and in conformity
with the lowering of the mold box by engage
ment of hook 24 with terminal 23, leaving the
30 shown. Thereafter the block is removed from
50
be ?rst placed in the box, as indicated in the
tained in normally operative position as in Fig.
2 by the counterweight and any suitable limiting
sired condition with a somewhat different minute
curving line effect depending on the proportions
of the disk, speed of rotation, surface ?nish, etc. 45
If desired, the face of the block may be treated
by any suitable coloring material, as in my prior
Patent No. 1,692,355.
The construction and mode of operation of the
machine will be readily understood and appre 50
ciated by all those familiar with the block mak
ing art and it provides means for securing the
desirable effects of not only consistency of prod
uct but also the desirable smooth and ornamental
?nish to the block face or faces.
55
The invention is especially novel and useful in
providing means for a wiping and trowelling
treatment across the face of the block in a con
ing a de?nite ?nished corner or corners.
sistently curving path.
In Figs. 8 to 11 I show a modi?ed construction
in which the mold box 32) rests by its open side
on the face of a horizontally arranged disk 5b
What I claim is:
60
1. In combination with an open top mold box
adapted to receive plastic aggregate and com
mounted by its downwardly extending spindle l5b
pressing means therefor operable through the
in a suitable bearing lBb forming a portion of
65 the foundation framework of the machine. In
such construction the cores 61) extend horizon
tally through the mold box cavity through a
carrying and pushing 'plate 25, whereby the
top, one of the face forming walls of the box
being omitted, a rotatable facing disk forming 65
the closing wall therefor, means maintaining
closing and compression resistance between the
mold box and disk during compression, and
formed block may be separated from the cores
means effecting separation between the mold
70 and projected laterally from the mold box. The
aggregate is delivered by hopper ?lb and tamps 9b
box and contents and the disk, said means em
bodying a connection between the mold box and
compress the aggregate transversely between the
cores, the operation otherwise being substantial
disk.
ly the same as in usual practice.
If desired, a
preliminary facing charge of-?n'er material may
2. In combination with an open top mold box
adapted to receive plastic aggregate and com
pressing means therefor operable through the 76
3
2,111,701
open top, one of the face forming walls of the
box being omitted, a rotatable facing disk form
ing the closing wall therefor when the ?lled box
is in a position subject to compression, means for
rotating the disk while in con?ning relation to
the block in formation, and means effecting
separability between the mold box and its con
tents and the disk upon completion of densi?ca
tion of the aggregate, said means embodying a
10 connection between the mold box and disk.
3. In combination with an open top mold box
adapted to receive plastic aggregate and com
pressing means therefor through the open top,
one of the face forming walls- of the box being
15 omitted, a rotatable facing disk forming the clos
ing wall therefor, means for rotating, the disk,
while in con?ning relation to the block in for
mation, and means for effecting edgewise sepa
ation of the mold box .and disk.
20
4. In combination with an open top mold box
having an open side, a rotatable facing disk pro
viding a closing wall at the open side, a verti-v
cally movable frame therefor, means associated
therewith for rotating the disk, and means co
25 operating with the movable frame for lowering
and raising the mold box.
'
5. In combination with an open top mold box
having a bottom and an open side and a depend
ing lowering device, a rotatable facing disk form
30 ing a'closure for the open side, a vertically mov
able frame therefor having a portion engageable
with the lowering device, means for rotating the
disk, and means for erecting the mold box after
lowering it.
35
6. In combination with an open top mold box '
having opposite open sides, a pair of rotatable
smoothing disks forming closures therefor hav
ing operative connection with the mold box and
a movable frame therefor adapted to move the
40 disks across the faces of the block in formation,
and means associated therewith for rotating the
disks together.
,
7. In combination with an open top mold box
having a bottom and an open side and a depend
45 ing lowering device, a rotatable facing disk form
ing a closure for the open side, a vertically mov
able lever arm therefor having a hook terminal
engageable with the lowering device, a counter
weighted arm, means for rotating the disk
mounted on the lever arm, a lifting element con
nected with the counterweighted arm, and means
for erecting the mold box after lowering it.
8. In combination with an open top and bot
tom mold box having a rear wall, and a hori
zontally arranged rotatable smoothing disk clos
ing the open bottom thereof, an inner pusher
plate and an outer closing pallet wall forming
con?ning faces for the block in formation, a tip 1O
ping support therefor, and pusher rods extend
ing through the rear wall and connected with
the inner pusher plate.
9. In combination with an open top and bot
tom mold box having a rear wall,? and a hori
zontally arranged rotatable smoothing disk clos
ing the open bottom thereof, an inner pusher
plate and an outer closing pallet wall forming
con?ning faces for the block in formation, pusher
rods extending through the rear wall and con
20
nected with the inner pusher plate, guide rods
extending through? opposite ends of the mold
box and abutting the pallet wall, and holding
latches for the pallet.
10. In combination with an open top and bot
tom mold box having a rear wall, and a hori
zontally arranged rotatable smoothing disk clos
ing the open bottom thereof, an inner pusher
. plate and an outer closing pallet wall forming
con?ning faces for the block in formation, pusher .?:
rods extending through the rear Wall and con
nected with the inner pusher plate, and a tilting
receiving bracket for the formed block beyond
the mold box.
_
11. In combination, a horizontal smoothing
disk having a supporting bearing and rotating
means, an open bottom and top mold box on the
disk having a rear wall and end walls and an
open front, a closing pallet for the open front,
?lling and compressing means for the mold box, 40
a rear trackway, block discharging? means mount
ed on the trackway and extending through the
rear wall of the mold box, and a pivoted angle
shaped receiving bracket in front of and ?ush
with the surface of the disk and a support there 45
for when tipped with the block for removal on
the pallet,
.
FRANCIS J. STRAUB.
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